[PULL v2 46/96] disas/riscv: Handle c.addi4spn imm != 0 during decode

From: Richard Henderson <[email protected]>

Reviewed-by: Alistair Francis <[email protected]>
Signed-off-by: Richard Henderson <[email protected]>
Message-ID: <[email protected]>
Signed-off-by: Alistair Francis <[email protected]>
---
 disas/riscv.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/disas/riscv.c b/disas/riscv.c
index 9813d75feb..8a957e6a1e 100644
--- a/disas/riscv.c
+++ b/disas/riscv.c
@@ -1885,7 +1885,7 @@ static const rv_opcode_data rvi_opcode_data[] = {
     { "fmv.x.q", rv_codec_r, rv_fmt_rd_frs1 },
     { "fmv.q.x", rv_codec_r, rv_fmt_frd_rs1 },
     { "c.addi4spn", rv_codec_ciw_4spn, rv_fmt_rd_rs1_imm, NULL, rv_op_addi,
-      rv_op_addi, rv_op_addi, rvcd_imm_nz },
+      rv_op_addi, rv_op_addi },
     { "c.fld", rv_codec_cl_ld, rv_fmt_frd_offset_rs1, NULL, rv_op_fld,
       rv_op_fld, 0 },
     { "c.lw", rv_codec_cl_lw, rv_fmt_rd_offset_rs1, NULL, rv_op_lw, rv_op_lw,
@@ -2952,7 +2952,11 @@ static void decode_inst_opcode(rv_decode *dec, rv_isa isa)
     switch ((inst >> 0) & 0b11) {
     case 0:
         switch ((inst >> 13) & 0b111) {
-        case 0: op = rv_op_c_addi4spn; break;
+        case 0:
+            if ((inst >> 5) & 0xff) {
+                op = rv_op_c_addi4spn;
+            }
+            break;
         case 1:
             if (isa == rv128) {
                 op = rv_op_c_lq;
-- 
2.54.0